The distance between two points in phase on a progressive wave is 5cm. If the sped of the wave is 0.2ms^-1, calculate its period

• A. 4.00s
• B. 2.50s
• C. 0.25s
• D. 0.04s

A quantity of hot water at 100^oC is added to 400g of water at 10^oC until the temperature of the mixture is 60^oC.

Calculate the mass of the hot water added. [Specific heat capacity of water =4200JKg^-1 K^-1]

• A. 200g
• B. 320g
• C. 400g
• D. 500g

The significance of money to modern economic system is that it?

• A. is used as a means of payment
• B. promotes specialization and exchange
• C. measures value and promotes exchange
• D. causes inflation in the economy

The ability to make and enforce laws and administer justice constitute the major functions of a _________

• A. nation
• B. society
• C. government
• D. pressure group

The concept applied by XYZ Ltd that uses aggressive promotional efforts to attract customers to buy its brand of cosmetics is

• A. production concept
• B. product concept
• C. societal concept
• D. selling concept

(a) A cylinder with radius 3.5 cm has its two ends closed, if the total surface area is \(209 cm^{2}\), calculate the height of the cylinder. [Take \(\pi = \frac{22}{7}\)].

(b) In the diagram, O is the centre of the circle and ABC is a tangent at B. If \(\stackrel\frown{BDF} = 66°\) and \(\stackrel\frown{DBC} = 57°\), calculate, (i) \(\stackrel\frown{EBF}\) and (ii) \(\stackrel\frown{BGF}\).

Find the volume of the figure

• A. \(\frac{a \pi^2}{3} (x + 3y) \)
• B. a\(\pi ^2\)y
• C. \(\frac{a \pi ^2}{3}\)(y + x)
• D. (\(\frac{1}{3} a \pi ^2 x + y\))

A machine which enables sales without the physical presence of a sales attendant is a

• A. computer machine
• B. vending machine
• C. telex machine
• D. fax machine

In the sentence below, there is one underlined word and one gap. From the list of words lettered A to D, choose the one that is most nearly opposite in meaning to the underlined word and that will, at the same time correctly fill the gap in the sentence.

Only question one iscompulsory; therefore, the rest are .....

• A. easy
• B. clear
• C. confusing
• D. optional

The sum of an interior angles of a regular polygon is 30 right angles. How many sides has the polygon?

• A. 34 sides
• B. 30 sides
• C. 26 sides
• D. 17 sides